The only time I've received an order for brass and plastic strip which was deliberately deformed into a smaller shipping packet was ordering from a modelshop in Europe who do some fantastic marine stuff! But deliberately bending brass and plastic into a smaller packet, and taking an absolute age to ship (I had to chase it) to receive what were essentially damaged parts is a no-no, so would never order again.
My postie at the moment on the other hand seems obsessed with folding stuff. No danger with orders but I always wonder why when everything fits through the box.